Black spots on maple leaves

Question

My maple trees have black spots on the leaves. The width of the spot varies – most about width of finger tip. I’m in upstate NY. What could this be and how should I treat this?

Answer 1

Mine has the same thing. It can be a fungus but it is very hard spraying a tree. They are going to lose all their leaves soon anyway. But be vigilant about sanitation and dispose of the fallen leaves instead of composting them.